Comment by meinersbur

The patent expired, but the minifigs is also a EU 3D trademark. This is not possible for the brick which (only) serves a technical function, namely to hold on each other. Trademarks do not expire while in use. Another example for a 3D trademark, also in this US, is the Coca Cola bottle.

[1] https://www.chaillot.com/ip-news/validity-of-3d-trademarks-f...